The "button" term comes from the fact people perceive the leaflets' shape as somewhat roundish, as they alternate along the fern stems.

The author observed the dormancy period of their rabbit's foot fern, during which the fronds naturally dried out. Rabbit's ...

It was the year White Christmas debuted in theaters; the year Elvis launched his legendary career; the year Woody Hayes led the Buckeyes to their second national championship; and the year Dr. Fern E.